The way your explaining time travel as can be simplified. What your basically saying is that time is like a movie, and when a movie is rewound for any reason, do any of the charcters know it has? No, everything that has happened, has happened, and the is no way to change that. I don't necessarily like this theory, I like to believe in the Multi Universal Theory for time travel, that way I can go back in time and kill myself, then kill me before I kill myself, then...